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Is It a Country Ballad? Listen to the Beat! *
Have you ever noticed that hip-hop songs have a fast tempo, while country ballads are usually slow? Do you think there is a correlation between the number of beats per minute (bpm) in... Read more...
Difficulty = 4 – 6 Add to favorites Show others like this


Sound Off: How Guitar Positioning Affects Volume *
A concert piano. It's a beautiful instrument and a spectacular sight when it's all set up on stage. The first thing you may notice when you first look at a concert piano is the impressive-looking... Read more...
Difficulty = 3 Add to favorites Show others like this

Guitar Jingle: Discovering the Locations of Harmonics
Did you know that your guitar has a secret? Yes, that's right—hidden along each string are special places where you can play harmonics and make your guitar sound like a bell! In this music science fair project, you'll find out where the main harmonics are located on a guitar, and then see how those locations are related to the length of the strings. So get out your guitar—it's time to ring in a science fair project! Read more...

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Setting Up the Circuit

1. Attach the 9-V snap connector to the AA battery holder.
1. Even though the name says "9 V," you will use the connector to hook up the AA battery holder.
2. Strip about 2 cm from the end of the red wire from the 9-V snap connector.
3. Strip about 2 cm from the end of the red wire from the buzzer.
4. Twist the ends of the red wires together from the snap connector and the buzzer.
5. Wrap electrical tape around the exposed twisted red wires.
6. Attach a black alligator clip to the black wire from the buzzer.
7. Wrap electrical tape around the black alligator clip and the black wire from the buzzer.
1. Even though the alligator clip is insulated, there is a chance the bare wire might touch another bare wire. The electrical tape ensures the bare wire is insulated.
8. Attach a red alligator clip to the black wire from the battery pack.
1. Wrap electrical tape around the red alligator clip and the black wire from the battery holder to insulate the bare wire.
9. Place the batteries in the battery holder.
10. Touch the red and the black probes together. You should hear a buzz from the buzzer. If you don't, check the batteries and your connections and try again. See Figure 2.

Continuity tester.